Cleaning and polishing apparatus.



S. O. CARROLL. CLEANING AND POLISHING APPARATUS.

APPLICATION FILED APR. 3, 1908.

If atented Apr. 27, 1909.

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SAMUEL o.oAnno1.L,ornammsyrsxas- CLEANING AND POLISHING APPARATUS.

Specification of Letters Patent.

Patented April 27, 1909.

' Application filed April 3, 1908. Serial No. 424,949.

ing Apparatus, of which the following is a specification,

. My invention relates to an improved a paratus for cleanin andpolishing portab 0 articles of various tinds and shapes in .anexpeditious manner by the use. of a sand The object of the invention isto n'ovide an apparatus by which a consider-ab e number of articles maybe subjected to the action of the sand blast. withina closed space sothat the attendance of an operator in proximity to the article duringthe polishing operation is unnecessary.

l have also aimed to provide a construction by which all arts of thearticle to be cleaned or polishedhwill be presented automatically to theaction of the sand blast.

With these and other objects in view, the invention includes thefeatures of construction and arran enient and combination of partshereinafter described and particularly set forth in the appended claims.

An apparatus constructed in accordance with my inventionis illustratedin the accompanying drawings, in which,-

Figure 1 is a sectional elevation, and Fig. 2 is a plan view of thetable with parts broken away.

Referrin by reference characters to these drawings, t 1e numeral 10designates a room or chamber which is closed with the exception of suchopenings as are hereinafter described, and is designed to contain thearticles which are tobe cleaned or polished. Within this chamber islocated a rotatin table 11, which is mounted upon a vertica shaft 12,which is desi ned to be rotated from a suitable source 0 power throughany desired form of intervening driving connections, a convenient formbeing beveled gear wheels 13 and 14 and drive shaft 15. W ithin the roomor chamber 10 and directly be neath the rotating table 11 is an annularflan e 16 provided with an internal rack 17, the atter being securedrigidly in lace in any suitable manner, as for instance y bolting theflange or portions thereof to the floor, as indicated at 18.

In the table are journaled a plurality of vertically disposed shafts 19which carry at their lower ends planet gear wheels 20, which-arcdesigned to mesh with the stationary rack 17, so that as the table isrotated the planetgears will be rotated by their engagement with thestationary -racl-:,-

thereby imparting rotary motion to the vertical shafts 19. Upon theupper ends of the shafts 19 are located. supporting pedestals orplatforms 21 which are connected to the shafts by hall and socket joints22, which joints are "so arranged that the pedestal is free to rock inall directions, but is compelled to rotate with its supporting shaft.Each pedestal. however, is normally held in a horizontal position bymeans of springs 23 interposed between the pedestal and the table 11 ora raised part 24 thereon, which part 24 may form an additional bearingfor the shaft 19. At one side of the room and at a suitable height islocated a sand blast nozzle 25, which is designed to project a sandblast horizontally across the room.

It will readily be seen that as the table rotates the articles such forinstance as bath tubs, chairs, and other articles of furniture, orindeed any articles, which it is desired to subject to the cleaning andpolishing action of tic sand blast and which have been previously placedupon the su porting pedestals 21, will be carried arounc with the table,

and at the same time have a rotary motion upon then own axes impartedthereto. The result Wlll be thatthe articles will be broughtsuccessively past the sand blast and will be constantly rotated so as topresent every portion to the action of the blast. Further, y reason ofthe pedestal being flexibly mounted as before described, the articlewill rock or incline to one side under the action of the blast and thusthe lower or. under arts of the articles will be subjected to the last.

\Yhile various forms of sand blast apparatus might be employed withoutdeparting from the spirit of my invention, I have found that shown inthe drawings to be a very con venient and desirable form. In this thenozzle 25 is elongated in a vertical direction as shown and with it isconnected a pipe 26 to which is connected an injector 27. This comprisesa three-way cou ling, one branch arm of which is connectet to the pipe26, while another receives the nozzle 28 or an air supply pipe 29 whichconnects with any suitable source of compressed air supply, such forinstance as an air compressor or pump shown conventionally at 30. Asuitable cut off valve 31 may be provided in the pipe 29. With the thirdbranch 27 a of the' three way coupling is connected the sand feed: Thiscomprises'a pair of hoppers 32 and 33, the former of which is the mainho er and is connected by pie 34' with t e ranch 27, a suitableecut 0valve 35 being providedby which the feed of the sand from the hopper 32may be cut off if desired. From the hopper 33 a feed ipe 36 also leadsto the branch 27, which is ewise provided with a cut off valve as shownat 37. In order to remove the-sand from the chamber, the supportingtable 11 is made perforated or of skeleton form so that the sand afterhaving acted u on the articles carried'by the pedestals will rop throughthe table 11 and upon the floor of the chamber, which as shown is?formed inclined. Down this incline it will tend to-work its wa into thelower portion of the floor and will be'swept by the broom or brush 38into the opening 39, which leads to the hopper 40. At the lower end thishop or 401 communicates with an injector 41, w ich is supplied with airfrom anysuitable source of sup ly by which injector the sand is forcedup tl ie pipe 42 to be used over again. This pipe may have a branch 43communicating with the up er portion of the injector nozzle 25, anot. erbranch 44 leading to the ho per 32 and a third branch or portion 45eading to the hopper 33, each of these branches being provided withsuitable cut off valves as shown. To relieve the chamber of excess ofcompressed air and dust it is provided with a relief pipe 46 whichconnects with the three way coupling 47 one branch of which turnsdownwardly into a hopper 33 for the deposit of the heavier particlescarried by the air, while the other branch turns upwardly for thedischarge into the outer air. A suitable glass covered Window 48 isrovided by which the process may be watcl ied from the exterior of theroom. 7

It Will be understood that while I have spoken oi this a paratus asdesigned to subject articles to t e action of a sand blast, by sand Irefer to any polishing agent.

Having thus described my invention, what I claim is r 1; An apparatusfor subjecting articles to a cleaning and polishing blast, comprising aclosed chamber, a suitable nozzle therein for directing a polishingblast into the chamber, a rotary table or carrier within the chamberwith means for operating it, a su port for an article carried bythetable, an means for closed chamber, a suitable nozzle therein fordirecting a olishing blastinto the chamber, a rotary ta le or carrierwithin the table with means for operating it, a su port for an articlecarried bythe table, an means for rotating said support upon its ownaxis as.

the table rotates, and for causing it to rock or oscillate during itsrotation, substantially as described.

3. In combination, a closed chamber or compartment, a rotary table.therein, a plu. rality of vertical shafts j ournaled in said table. astationary rack carried Within said chamber, planet ears carried by saidshafts, and meshing wit said rack, edestals or supports carried bysaidshaft: ove the table, and means for causing a blast of polishing material to pass horizontally above the table, substantially as described.

4. In combination, a closed chamber, a rotary table therein, a luralityof vertical shafts carried by said ta le, means for causing said shafts.to revolve as the table rotates,

supporting pedestals mounted to oscillate upon the upper ends of theshafts, and means for directing a blast of olishing material within thechamber, su stantially as described.

5. In combination, a closed chamber, having an inclined bottom, a rotarytable or carrier within said chamber, a plurality of pedestals su portedby said table, means for causing .t iem to revolve on their own axesduring the rotation of the table and a sweeper carried by the table andacting upon said inclined surface, and means for causing a polishingblast to be delivered within said room, substantially as described.

6. In combination, a chamber having a conical bottom, a blast nozzletherein, means for causing a plurality of articles to be successivelypassed in front of said nozzle, an outlet for the polishing materialfrom alow part of'the floor ofsaid chamber, and a rotary sweeper forsweeping the deposited polishing material from the floor into saidoutlet, substantially as described.

In testimony whereof, I aflix my signature in presence of two witnesses.

SAMUEL C. CARROLL.

Witnesses J. M. AVERY, C. H. READ.

